Broué's abelian defect group conjecture holds for the Harada-Norton sporadic simple group $HN$

Shigeo Koshitani, Jürgen Müller

In representation theory of finite groups, there is a well-known and important conjecture due to M. Broué. He conjectures that, for any prime $p$, if a $p$-block $A$ of a finite gr…